I think the best way would be full of all fluids except gas, due to the differing tank capacities.
The factory weight ratings are dubious I believe at best.
I bought a new-from-the-crate Yamaha YFZ450 (atv) recently. Factory weight rating is 350 dry. I took it right to a certified shipping scale, not a drop in the gas tank, and it weighed 372.
Two quarts of oil and a quart of anti-freeze is probably not 22 pounds.
Pisses me off actually, people who are spending 7 grand on a race atv (or anything else) should be provided truthful specs.